<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>Fix CSS values</title>
    <style>
    body {
        font: 2em Menlo, monospace;
    }
    #output {
        background-color: hsl(90, 100%, 94%);
        color: green;
    }
    </style>
</head>
<body>
<span id="input" contenteditable="plaintext-only" autofocus>url('</span>
<span id="output"></span>
<script src="fix-value.js"></script>
</body>
</html>
